Penelitian ini bertujuan untuk mengetahui pengaruh waktu penyangraian biji kopi terhadap perubahan warna gigi. Delapan belas gigi premolar manusia direndam selama 30 jam, 45 jam, atau 60 jam dalam minuman kopi dengan biji kopi yang disangrai 10 menit, 15 menit, atau 20 menit pada suhu 210oC. Pengukuran warna dilakukan dengan alat Vita Easy Shade. Hasil menunjukkan terdapat perubahan warna gigi yang berbeda tidak bermakna antar kelompok waktu penyangraian biji kopi dan terdapat perubahan warna gigi yang berbeda bermakna pada perendaman dalam minuman kopi selama 60 jam. Disimpulkan bahwa tidak ada pengaruh waktu penyangraian biji kopi terhadap perubahan warna gigi.

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The aim of this study was to determine the effect of coffee beans roasting time on tooth discoloration. Eighteen human premolar teeth were immersed for 30 hours, 45 hours, or 60 hours in the coffee beverage at which the beans were roasted at 210oC for 10 minutes, 15 minutes, or 20 minutes. The color value was measured using the Vita Easy Shade. There was no significant color change between the coffee beans roasting time. There were significant tooths color change which immersed in the coffee beverage after 60 hours. In conclusion, there was no effect of coffee beans roasting time on tooth discoloration.